Selective and persistent application level encrytion for video provided to a client

a video and client technology, applied in the field of selective, can solve problems such as difficulty in creating trick play files

Active Publication Date: 2007-07-12
GOOGLE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Creation of these trick play files may be

Method used

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  • Selective and persistent application level encrytion for video provided to a client
  • Selective and persistent application level encrytion for video provided to a client
  • Selective and persistent application level encrytion for video provided to a client

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Embodiment Construction

[0013] The present invention now will be described more fully hereinafter with reference to the accompanying drawings, which form a part hereof, and which show, by way of illustration, specific exemplary embodiments by which the invention may be practiced. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Among other things, the present invention may be embodied as methods or devices. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. The following detailed description is, therefore, not to be taken in a limiting sense.

[0014] Throughout the specification and claims, the following terms take the mea...

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PUM

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Abstract

A system, apparatus, and method are directed towards allowing ingestion of encrypted content into such as a VOD server, or PVR, or the like by selectively encrypting portions of a content stream based on various selection rules. In one embodiment, the selection rules include leaving selected portions of the content stream unencrypted, including packets that include a PES header; or video packets that include various trick play data such as picture start, GOP start, sequence start, sequence end data; PIDs associated with a PAT, PMT, or the like; while other portions of the content stream may be encrypted, including video and/or audio PIDs, or other video and/or audio portions. In still another embodiment, Entitlement Control Messages (ECMs) may be inserted that employ an encryption/decryption key rotation scheme, such as odd and/or even scrambling control bit structures, which may also be rotated based on a variety of conditions.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] The present application claims benefit of provisional application Ser. No. 60 / 757,055 entitled “Selective And Persistent Application Level Encryption For Video Provided To A Client,” filed on Jan. 6, 2006, the benefit of the earlier filing date of which is hereby claimed under 35 U.S.C. § 119 (e) and 37 C.F.R. §1.78, and which is further incorporated by reference.FIELD OF THE INVENTION [0002] This invention relates generally to computing security, and more particularly but not exclusively, to selectively encrypting content based on a selection rule, that includes maintaining trick play data and associated stream data in the clear. BACKGROUND OF THE INVENTION [0003] Recent advances in the telecommunications and electronics industry, and, in particular, improvements in digital compression techniques, networking, and hard drive capacities have led to growth in new digital services to a user's home. For example, such advances have provided ...

Claims

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Application Information

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IPC IPC(8): G06F12/14H04N7/167H04L9/32G06F11/30
CPCH04N7/1675H04N21/23476H04N21/235H04N21/26266H04L2209/805H04N21/435H04L9/065H04L2209/30H04L2209/60H04N21/26606
Inventor MACLEAN, CHARLES DUNCANINSKIP, THOMAS
Owner GOOGLE LLC
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